Premium-quality, magazine is produced using state-of-the-art manufacturing techniques to run as flawlessly as the best custom-tuned pistol. Extra-thick, tempered steel mag body is formed to small tolerances, with a smooth-welded seam carefully polished to eliminate any rough spots or burrs that might snag the rigid, stainless steel follower. The hard, high-polish finish eases insertion into the mag well and resists attracting dust and dirt. Precision-formed feed lips are engineered to resist deforming, even when the magazine is stored fully loaded for extended periods. An extra-strong spring provides the additional force necessary to ensure reliable feeding under any conditions. A shock-resistant, polymer composite floorplate protects magazine when dropped on a hard surface, and detaches easily to disassemble the mag for cleaning. Separate, numbered witness holes let you know exactly how full your mag is.